emacs: stop vendoring PR NixOS#234651

Previously, we vendor PR NixOS#234651 because we want to keep the old
behavior of filtering out packageRequires from the arguments we pass
to the underling stdenv.mkDerivation.  Doing so raises the concern
about the complexity of PR NixOS#234651.

Considering that passing packageRequires to stdenv.mkDerivation also
works well, we stop filtering it out and stop vendoring PR NixOS#234651.

Now, this PR only uses the existing interface of stdenv.mkDerivation.
Even though the name of the build helper is still extendMkDerivation',
it is nothing new and has been used in Nixpkgs, such as
php.buildComposerProject[1].

[1]: https://github.com/NixOS/nixpkgs/blob/f3834de3782b82bfc666abf664f946d0e7d1f116/pkgs/build-support/php/builders/v1/build-composer-project.nix#L108

pkgs/applications/editors/emacs/build-support/elpa.nix

@@ -4,11 +4,11 @@
 
 let
   genericBuild = import ./generic.nix { inherit lib stdenv emacs texinfo writeText; };
-  libBuildHelper = import ./lib-build-helper.nix { inherit lib; };
+  libBuildHelper = import ./lib-build-helper.nix;
 
 in
 
-libBuildHelper.extendMkDerivation { } genericBuild (finalAttrs:
+libBuildHelper.extendMkDerivation' genericBuild (finalAttrs:
 
 { pname
 , version

pkgs/applications/editors/emacs/build-support/generic.nix

@@ -4,8 +4,6 @@
 
 let
   inherit (lib) optionalAttrs;
-  handledArgs = [ "buildInputs" "nativeBuildInputs" "packageRequires" "propagatedBuildInputs" "propagatedUserEnvPkgs" "meta" ]
-    ++ lib.optionals (emacs.withNativeCompilation or false) [ "postInstall" ];
 
   setupHook = writeText "setup-hook.sh" ''
     source ${./emacs-funcs.sh}
@@ -21,11 +19,11 @@ let
     fi
   '';
 
-  libBuildHelper = import ./lib-build-helper.nix { inherit lib; };
+  libBuildHelper = import ./lib-build-helper.nix;
 
 in
 
-libBuildHelper.adaptMkDerivation { } stdenv.mkDerivation (finalAttrs:
+libBuildHelper.extendMkDerivation' stdenv.mkDerivation (finalAttrs:
 
 { pname
 , version
@@ -42,9 +40,9 @@ libBuildHelper.adaptMkDerivation { } stdenv.mkDerivation (finalAttrs:
 }@args:
 
 {
-  name = "emacs-${finalAttrs.pname}-${finalAttrs.version}";
+  name = args.name or "emacs-${finalAttrs.pname}-${finalAttrs.version}";
 
-  unpackCmd = ''
+  unpackCmd = args.unpackCmd or ''
     case "$curSrc" in
       *.el)
         # keep original source filename without the hash
@@ -60,12 +58,13 @@ libBuildHelper.adaptMkDerivation { } stdenv.mkDerivation (finalAttrs:
     esac
   '';
 
-  buildInputs = packageRequires ++ buildInputs;
+  inherit packageRequires;
+  buildInputs = finalAttrs.packageRequires ++ buildInputs;
   nativeBuildInputs = [ emacs texinfo ] ++ nativeBuildInputs;
-  propagatedBuildInputs = packageRequires ++ propagatedBuildInputs;
-  propagatedUserEnvPkgs = packageRequires ++ propagatedUserEnvPkgs;
+  propagatedBuildInputs = finalAttrs.packageRequires ++ propagatedBuildInputs;
+  propagatedUserEnvPkgs = finalAttrs.packageRequires ++ propagatedUserEnvPkgs;
 
-  inherit setupHook;
+  setupHook = args.setupHook or setupHook;
 
   meta = {
     broken = false;
@@ -77,7 +76,7 @@ libBuildHelper.adaptMkDerivation { } stdenv.mkDerivation (finalAttrs:
 
 // optionalAttrs (emacs.withNativeCompilation or false) {
 
-  addEmacsNativeLoadPath = true;
+  addEmacsNativeLoadPath = args.addEmacsNativeLoadPath or true;
 
   inherit turnCompilationWarningToError ignoreCompilationError;
 
@@ -100,4 +99,4 @@ libBuildHelper.adaptMkDerivation { } stdenv.mkDerivation (finalAttrs:
   '' + postInstall;
 }
 
-// removeAttrs args handledArgs)
+)

pkgs/applications/editors/emacs/build-support/lib-build-helper.nix

@@ -1,56 +1,5 @@
-# stolen from https://github.com/NixOS/nixpkgs/pull/234651
-# TODO switch to functions in that PR once it is merged
-
-{ lib }:
-
-let
-  inherit (lib)
-    setFunctionArgs
-    id
-    functionArgs
-    optionalAttrs
-    toFunction
-    ;
-in
 {
-
-  extendMkDerivation =
-    {
-      modify ? id,
-      inheritFunctionArgs ? true,
-    }:
-    mkDerivationBase: attrsOverlay:
-    setFunctionArgs
-      # Adds the fixed-point style support.
-      (fpargs: modify ((mkDerivationBase fpargs).overrideAttrs attrsOverlay))
-      # Add __functionArgs
-      (
-        # Inherit the __functionArgs from the base build helper
-        functionArgs (attrsOverlay { })
-        # Recover the __functionArgs from the derived build helper
-        // optionalAttrs inheritFunctionArgs (functionArgs mkDerivationBase)
-      )
-    // {
-      # Passthru attributes attached to the result build helper.
-      attrsOverlays = mkDerivationBase.attrsOverlays or [ ] ++ [ attrsOverlay ];
-    };
-
-  adaptMkDerivation =
-    {
-      modify ? id,
-      inheritFunctionArgs ? true,
-    }:
-    mkDerivationBase: adaptArgs:
-    setFunctionArgs
-      # Adds the fixed-point style support
-      (
-        fpargs: modify (mkDerivationBase (finalAttrs: adaptArgs finalAttrs (toFunction fpargs finalAttrs)))
-      )
-      # Add __functionArgs
-      (
-        # Inherit the __functionArgs from the base build helper
-        optionalAttrs inheritFunctionArgs (functionArgs mkDerivationBase)
-        # Recover the __functionArgs from the derived build helper
-        // functionArgs (adaptArgs { })
-      );
+  extendMkDerivation' =
+    mkDerivationBase: attrsOverlay: fpargs:
+    (mkDerivationBase fpargs).overrideAttrs attrsOverlay;
 }

pkgs/applications/editors/emacs/build-support/melpa.nix

@@ -5,7 +5,7 @@
 
 let
   genericBuild = import ./generic.nix { inherit lib stdenv emacs texinfo writeText; };
-  libBuildHelper = import ./lib-build-helper.nix { inherit lib; };
+  libBuildHelper = import ./lib-build-helper.nix;
 
   packageBuild = stdenv.mkDerivation {
     name = "package-build";
@@ -29,7 +29,7 @@ let
 
 in
 
-libBuildHelper.extendMkDerivation { } genericBuild (finalAttrs:
+libBuildHelper.extendMkDerivation' genericBuild (finalAttrs:
 
 { /*
     pname: Nix package name without special symbols and without version or

pkgs/applications/editors/emacs/build-support/trivial.nix

@@ -3,10 +3,10 @@
 { callPackage, lib, ... }@envargs:
 
 let
-  libBuildHelper = import ./lib-build-helper.nix { inherit lib; };
+  libBuildHelper = import ./lib-build-helper.nix;
 in
 
-libBuildHelper.extendMkDerivation { } (callPackage ./generic.nix envargs) (finalAttrs:
+libBuildHelper.extendMkDerivation' (callPackage ./generic.nix envargs) (finalAttrs:
 
 { pname
 , version